ios5

问题 I am new to iOS5 development and using objective-c. I have trouble understanding the difference between strong and weak storage. I have read the documentation and other SO questions, but they all sound identical to me with no further insight. I read the documentation: Transitioning To ARC - it references to iOS4 terms of retain, assign, and release; which confuses me. Then I look into Open U CS193p, where it differentiates strong and weak: Strong : "keep this in the heap until I don't point

问题 I am new to iOS5 development and using objective-c. I have trouble understanding the difference between strong and weak storage. I have read the documentation and other SO questions, but they all sound identical to me with no further insight. I read the documentation: Transitioning To ARC - it references to iOS4 terms of retain, assign, and release; which confuses me. Then I look into Open U CS193p, where it differentiates strong and weak: Strong : "keep this in the heap until I don't point

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 5 years ago . In my project the app launches in ViewController, which loads inside a table (Table class) by adding it as a subview (ViewController.h - [self.view addSubview: Table.tableView];) Camera Class is the detailed view, so when you tap in a table row it loads Camara.xib. Until here everything works fine. The problem

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 6 years ago . I am developing an application in iOS where I want to provide a password option..where user can enter a password and set it,and later when he opens the app,it should first ask for password to enter, So can we implement this? Any ideas ,suggestions are welcomed..... Regards Ranjit

问题 I want to get location information of any image/video from asset library using ALAssetPropertyLocation but it's returning nil information.Followings are my fraction of code. [workingDictionary setObject:[asset valueForProperty:ALAssetPropertyLocation] forKey:@"Location"]; Can anyone give me any image where location metadata is present.I tried with image taken from iPhone photo library but the things are same.Can anyone tell me where I am doing wrong? 来源： https://stackoverflow.com/questions

问题 I have been searching for a good example of split view controller. I am creating an app with textfields which when a user click on them, a pickerView pops up. I need one for iOS5. All of examples i have seen is for 4 and i felt difficulty in modification. 回答1: Check out this lecture: http://www.stanford.edu/class/cs193p/cgi-bin/drupal/node/271 The video is available for free on iTunes U, and includes a demo where Prof. Hegarty goes through setting things up. Everything in this course is iOS 5

问题 UIImagePickerController *ii_picker= [[UIImagePickerController alloc] init]; ii_picker.delegate=self; ii_picker.sourceType=UIImagePickerControllerSourceTypeCamera; add_photo=NO; [self presentModalViewController:ii_picker animated:YES]; [ii_picker release]; This used to work fine till I updated to iOS 5 on my iPhone. Something strange... Problem isn't in the code. It's working in blank project! If I paste it to any place in my project's code, it's crashing. If I change

问题 Hello I am currently using Simon Lee's wonderful tutorial to expand my cells. Everything is working fine. My cells are 100px, and when expanded the cell becomes 144px high. In the added 44px I have placed a toolbar with bar buttons. I've gotten the buttons to work but there is one problem. When the cell is expanded I can tap any of the 100px and the cell closes, however when the cell is closed , tapping on the lower 44px of the cell causes the bar buttons to fulfill their actions. I'm

问题 i m pretty stuck on this one rite now let me explain the problem this way: Motor View Controller (table 1) Add New Motor (table 2) show motor Detail (View 1) edit Motor Detail (table 3) now what happens is i go to table 1 then click on add button then go to table 2 and add a new motor on table 1 when i click on row of table 1 i go to view 1 where my details are shown in the labels and wen i click the edit button on this view a edit screen pops up now when i edit here i wanna save these

问题 simply I am beginner in developing on ipad and I need to draw rectangle at point x,y with width and height when i clicked or touched button . I searched on google but i didn't find anything working in button handler 回答1: Create rectangleButton in viewDidLoad method and write -(void)rectangleButtonSelected method in your ViewController.m. And also create class RectangleView of UIView. -(void)rectangleButtonSelected{ RectangleView *temp = [[RectangleView alloc] initWithFrame:CGRectMake(0, 0, 60